Airport-security protesters may have limited impact on Thanksgiving holiday travel because the body-scanning devices being targeted aren’t yet being widely used in terminals.

The Transportation Security Administration has installed more than 400 body scanners capable of detecting items beneath passengers’ clothes at 70 U.S. airports, agency spokesman Greg Soule said yesterday. That means fewer than a fifth of the nation’s 2,200 security lanes at 450 commercial airports will have the devices.

“The good news about this particular holiday season is that you’re likely, probably, not to encounter one,” said Rick Seaney, chief executive officer of, an online travel site.

Federal transportation screeners, airlines and travelers have been preparing for Wednesday, one of the busiest travel days of the year. It may be complicated by some groups’ planned protests of body scanners.

Passengers should “use some judgment” and not tie up others traveling to see loved ones over the holiday, John Pistole, administrator of the security agency, said Tuesday.

Airlines said that so far they are seeing no effects from planned protests.